The paper is a simplified exposition of an early combined phase I-phase II method for linear programming. The method works from an infeasible start. Besides, there is no need for regularity conditions if the method is applied to a primal-dual formulation.

Business process modelling is an area of work that is increasingly used in conjunction with software development. For example, many development methods note the importance of strategic or business modelling, typically as a prerequisite to analysis. In addition, Systems Engineering for Business...